| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 |
23권 1호, p.1185 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
In-Situ Electrochemical Activation of MoS2 Basal Planes with Atomic Layer Deposition Technique for Efficient Hydrogen Evolution Reaction |
| 초록 |
To date, tremendous efforts have been made to develop a molybdenum disulfide (MoS2) as an efficient catalyst for the hydrogen evolution reaction (HER). In this work, we fabricate an atomic layer deposition (ALD) titania (TiO2)-coated MoS2 (ALD(TiO2)-MoS2) catalysts and study about the in-situ electrochemical activation of these catalysts for the efficient HER. We deposit TiO2 on a commercial bulk MoS2 as the substrate, and the TiO2, which is coated on basal planes and edge sites of MoS2, will be dissolved by successive cathodic sweeps in an acidic aqueous electrolyte. The dissolution of TiO2 deposited on MoS2 results in the surface curvature onto MoS2 basal planes, which can serve as novel active sites of inert MoS2 basal planes for further enhanced HER kinetics. Therefore, we envision that this in-situ electrochemical activation of MoS2 basal planes will be utilized as a facile route to enhance the HER activity of MoS2-based catalysts. |
| 저자 |
이대원1, 김영민1, David H. K. Jackson2, 김태완1, 정순용1, 채호정1, Thomas F. Kuech2, 김형주1
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| 소속 |
1한국화학(연), 2Univ. of Wisconsin-Madison |
| 키워드 |
촉매 및 반응공학 |
| E-Mail |
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| 원문파일 |
초록 보기 |
